Lubrication 101
Figure 4-1
Oil sample coupler
7. Remove the cap from the sample coupler and clean the coupler with a clean rag.
8. Push on the coupler spring ball (see Figure 4-2) using a small tip to purge oil before taking a
sample. The residual pressure in the system will push the oil out of the coupler. Use a small
container to recuperate the oil that will come out. Let the oil leak for a few seconds (about half a
cup). In this operation, the pump must be engaged.
Figure 4-2
Spring ball
Taking an Oil Sample
Once you have released the residual pressure, you can take the sample.
To do so:
1. Remove the sample kit from its bag and, using a screwdriver, remove the vent cap from the bottle
cap (see Figure 4-3).
Figure 4-3
Vent cap
Filter cover
Sample
coupler
Hydraulic
tank